> ## Documentation Index > Fetch the complete documentation index at: https://developers.uqpay.com/llms.txt > Use this file to discover all available pages before exploring further. # Create Quote > Exchange rate quote for currency conversion. [ *Stablecoin Account API Publisher Disclaimer*](/stablecoin-account/v1.6/guide/stablecoin-account-api-publisher-disclaimer) ## OpenAPI ````yaml /stablecoin-account/v1.6/ramp.yaml post /v1/ramp/conversion/quote openapi: 3.0.2 info: title: Stablecoin Account API version: 1.0.4 description: > UQPAY Stablecoin Account API provides comprehensive stablecoin account management and payment solutions for fiat-cryptocurrency conversion, enabling complete fund flow loop functionality. ## Key Features - Asset Management: Query and manage wallet balances across multiple currencies - Fiat Transfer: Transfer funds between Stablecoin Account and Global Account systems - Currency Exchange: Crypto-Fiat mutual conversion with real-time quotes - Cryptocurrency Deposit: Receive crypto deposits with address management - Cryptocurrency Withdrawal: Initiate and track crypto withdrawals ## Authentication Use API keys to authenticate your client requests when utilizing UQPAY APIs. API keys are unique data strings used to authenticate users and enable access to privileged operations. Your API key should be kept confidential and secure at all times. ## Getting Started 1. Obtain API credentials (x-client-id and x-api-key) 2. Request access token via POST /api/v1/connect/token 3. Set up test environment using sandbox URL 4. Implement authentication with x-auth-token header 5. Start with basic operations ## Support For technical support and integration assistance, contact UQPAY support team. contact: name: UQPAY Support url: https://www.uqpay.com/support email: ramp.tech@uqpay.com license: name: Proprietary url: https://www.uqpay.com/legal/api-terms termsOfService: https://www.uqpay.com/legal/terms x-api-id: ramp-api-v1.0.0 x-logo: url: https://uqpay.com/img/UQPAY_LogoAnimv2.gif backgroundColor: '#FFFFFF' altText: UQPAY Logo x-categories: - Stablecoin Account - Payment Processing - Cryptocurrency - Fiat Exchange servers: - url: https://api-sandbox.uqpaytech.com/api description: Sandbox base URL. - url: https://api.uqpay.com/api description: Production base URL. security: [] tags: - name: Assets description: >- Manage stablecoin wallet accounts and query balances across different currencies. - name: Transfer (Out/In) description: Transfer funds between Stablecoin Account and Global Account systems. - name: Conversions description: Execute currency conversions between cryptocurrency and fiat currencies. - name: Deposits description: Manage cryptocurrency deposit addresses and track deposit transactions. - name: Withdrawals description: Create and manage cryptocurrency withdrawal requests. - name: Configuration description: Query supported assets, networks, and system configuration. - name: Address Book description: Manage wallet address book entries for withdrawals. - name: Travel Rule description: >- Reference data (VASPs, countries, regions) used to populate Travel Rule beneficiary information for address book entries. paths: /v1/ramp/conversion/quote: post: tags: - Conversions summary: Create Quote description: > Exchange rate quote for currency conversion. [ *Stablecoin Account API Publisher Disclaimer*](/stablecoin-account/v1.6/guide/stablecoin-account-api-publisher-disclaimer) operationId: create-quote parameters: - $ref: '#/components/parameters/XOnBehalfOf' requestBody: content: application/json: schema: $ref: '#/components/schemas/QuoteCreateRequest' responses: '200': headers: x-response-id: $ref: '#/components/headers/XResponseId' description: Quote created successfully content: application/json: schema: $ref: '#/components/schemas/QuoteCreateResponse' title: QuoteCreateResponse security: - XAuthToken: [] externalDocs: description: API Publisher Disclaimer – UQPAY Australia url: >- /stablecoin-account/v1.6/guide/stablecoin-account-api-publisher-disclaimer components: parameters: XOnBehalfOf: in: header name: x-on-behalf-of schema: type: string required: false description: > Specifies the sub-account on whose behalf the request is made. This should be set to the `account_id`, which can be retrieved via the List Connected Accounts API. If omitted or empty, the request is executed using the master account. More information at Connected Accounts. example: 18523f72-f4de-4f9c-bb8e-ec7d1c4f32be schemas: QuoteCreateRequest: type: object required: - sell_currency - amount - buy_currency - fixed_currency properties: sell_currency: type: string description: > Selling currency.\ For crypto-to-crypto, only USDT with one other supported coin is allowed. example: USDT buy_currency: type: string description: > Buying currency. \ For crypto-to-crypto, only USDT with one other supported coin is allowed. example: USD amount: type: string description: Amount for conversion example: '1000.00' fixed_currency: type: string description: > The currency to fix the amount for (either sell or buy currency). \ If either side is volatile (for example BTC or ETH), only USDT is allowed. example: USD QuoteCreateResponse: type: object required: - code - message - data properties: code: type: integer example: 200 message: type: string example: Success data: $ref: '#/components/schemas/QuoteResponse' QuoteResponse: type: object required: - quote_id - sell_currency - sell_amount - buy_currency - buy_amount - currency_pair - direct_rate - inverse_rate - processing_fee - network_fee - valid_from - valid_to properties: quote_id: type: string format: uuid description: Quote ID example: 958813b7-8523-4b93-862e-46eddb87b56d sell_currency: type: string description: Selling currency example: USDT sell_amount: type: string description: Selling amount example: '100' buy_currency: type: string description: Buying currency example: SGD buy_amount: type: string description: Buying amount example: '133.84' currency_pair: type: string description: Currency pair example: USDTSGD direct_rate: type: string description: Direct exchange rate example: '1.3384723' inverse_rate: type: string description: Inverse exchange rate example: '0.74712043' processing_fee: type: string description: Processing fee example: '0' network_fee: type: string description: Network fee example: '0' valid_from: type: string format: date-time description: Quote validity start time (ISO 8601) example: '2026-04-27T10:47:26+08:00' valid_to: type: string format: date-time description: Quote validity end time (ISO 8601) example: '2026-04-27T10:50:26+08:00' headers: XResponseId: description: >- Universally unique identifier (UUID v4) for the response. Helpful for identifying a request when communicating with UQPAY support. schema: type: string format: uuid example: 2adba88e-9d63-44bc-b975-9b6ae3440dde securitySchemes: XAuthToken: type: apiKey in: header name: x-auth-token description: The API token for login provided by UQPay. ````